Methodological Manual on Purchasing Power Parities

... organisms as feed for the developing larvae The aim of the present manual was therefore to review and summarise the latest developments concerning the production and use of the major live food organisms ... also the production and use of live food organisms as feed for the developing larvae The present manual describes the major production techniques currently employed for the cultivation of the ... Bijnens, Magda Vanhooren and March Verschraeghen for their assistance with the layout of the manual Lavens, P; Sorgeloos, P (eds.) Manual on the production and use of live food for aquaculture FAO Fisheries...

... weeks, the use of decapsulated cysts constitutes a saving of over one third in the amount of Artemia cysts used, compared to the use of live nauplii Table 4.2.4 The proximate composition (in % of ... valorization of an otherwise inferior product The cysts have the appearance and the practical advantages of a dry feed and, in contrast to Artemia nauplii (47 0 -5 50 µm), their small particle size (20 0-2 50 ... nauplii it is converted into the more stable trans-canthaxanthin 4.2 .5 Hatching 4.2 .5. 1 Hatching conditions and equipment 4.2 .5. 2 Hatching quality and evaluation 4.2 .5. 1 Hatching conditions and equipment...

... and attractive for the predators Table 4.4.3 Artificial seawater formulations used for tank production of Artemia (ing.l-1) For the Dietrich and Kalle formulation, solutions A and B are prepared ... influence the feeding behavior of Artemia by affecting the filtration rate, ingestion rate and/ or assimilation: including the quality and quantity of the food offered, the developmental stage of the ... the food tank should be large enough to hold the highest daily food ration at a maximum concentration of 200 g food. l-1 Even at these concentrations, the food suspension is so thick that the...

... copepods and is also very toxic for shrimp The degradation of rotenone, chlorine and CaO to non-toxic forms is fairly rapid (24 - 48 h) If on the other hand tea-seed cake or dipterex are used, ponds ... accumulates on the pond bottom, they should only be used for a limited period of time Recommended levels of organic manure are 0.5 to 1.25 ton.ha-1 at the start of the production season with dressings of ... analysis of the algae samples is recommended Algae composition does not only influence growth and reproduction of the Artemia, but also has an effect on the nutritional value of the biomass and the...

... of the plankton net may be fixed to the pond gates The amount of zooplankton collected depends on the zooplankton concentration in the water flowing out of the reservoir and on the volume of the ... However, one should be aware that the greater the surface area of the net the more effective and rapid the filtration Hence, the upper limit of the dimensions of the nets depends on the ease of handling ... transport the harvested zooplankton in 50 l containers Under these conditions the survival of the zooplankton depends on the amount of oxygen dissolved in the remaining water At a concentration of 100...

... l.m-3.day-1 in the following weeks The inoculation of the ponds is carried out on the 15th day at a rate of 10 daphnids per litre One month after the inoculation, blooms of more than 100 g.m-3 can ... particles from the water The efficiency of the filter allows even the uptake of bacteria (approx 1µm) In a study on the food quality of freshwater phytoplankton for the production of cladocerans, ... extinguished population after unfavourable seasonal conditions 6.1.2 Nutritional value of Daphnia The nutritional value of Daphnia depends strongly on the chemical composition of their food source However,...

... FIELD - WEAKENING BASED ON REACTIVE POWER WITH BLDC MOTOR The electrical machinery power is composed by the active power and the reactive power[ 9]-[10] In the static α − β frame, the active power ... control with permanent over speed area The principle of stator control based on reactive power theory for BLDC motor is described by formula A Chart of ﬁeld -weakening vector control of BLDC motor ... control of BLDC motor The instantaneous value of three-phase electric current is obtained by the counter-Clark transformation according to the above equation Field weakening control based on reactive...